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Showing 4 results for Psychometrics

Mohammad Masoud Vakili, Ali Reza Hidarnia, Shamsaddin Niknami,
Volume 18, Issue 1 (3-2012)
Abstract

Background & Aim: It is crucial to assess communication skills among health workers using valid culture-based instruments. This study aimed to develop and assess psychometric properties of the Interpersonal Communication Skills Scale among Zanjan Health Volunteers.

Methods & Materials: In this study, a total of 191 health volunteers participated in a self-rating assessment of the Communication Skills Scale (CSS). Moreover, 14 experts were asked to rate each item based on the relevance, clarity, and simplicity. Through a literature review, we developed an instrument with 43 items. The validity of the instrument was determined using the impact item method, content validity ratio (CVR), content validity index (CVI), face validity and exploratory factor analysis. Reliability of the instrument was reported by Alpha Cronbach coefficient. The CSS finally contained 35 items, divided into two categories: general and specific communication skills.

Results: Of 43 items, those with impact item index over 1.5, CVR over 0.51, and CVI over 0.79 were considered as valid while the rest were discarded resulting in a 35-item scale. Factor analysis was carried out to determine the relationship among the items of the CSS. Exploratory factor analysis reduced the list of items to 30, which were divided into seven groups with a minimum eigenvalue of 1 for each factor, capable of predicting 68.8% of the variance. Internal reliability of the scale was determined by alpha Cronbach coefficient (0.91).

Conclusion: The results of this study indicated that the CSS is a valid and reliable instrument for assessment of the communication skills among health volunteers in Zanjan. These findings could be used for developing similar instruments in other health worker groups.


Abbas Shamsalinia, Reza Ghadimi, Fatemeh Ghaffari,
Volume 25, Issue 4 (1-2020)
Abstract

Background & Aim: Maintaining and improving the health of the elderly through effective interventions requires the recognition of their lifestyle, including exercise using a valid and appropriate culture-specific tool. The aim of this study was to design and evaluate the psychometric properties of a tool for measuring exercise self-efficacy in the elderly.
Methods & Materials: A sequential exploratory mixed method study was performed in the form of a questionnaire with two qualitative and quantitative sections in 2019. The qualitative section consisted of item generation including three stages: theoretical stage (targeted search of existing literature), field work (semi-structured interviews with the elderly) and final analysis (integration of the results from the two previous stages). In the quantitative section, the psychometric properties of the questionnaire was evaluated using face, content and construct validity as well as the reliability through internal consistency and stability.
Results: Out of 37 initial items, four items were removed after calculating the item impact score.  Seven items were removed after assessing the content validity ratio and content validity index. Also, five items were omitted due to having a load factor less than 0.03. The result of exploratory factor analysis consisted of three factors “recognition”, “situational compatibility” and “self-control” which all together could explain 90.180% of the variance. The Cronbach’s alpha and the Intraclass correlation coefficient were found to be 0.957 and 0.949 respectively.
Conclusion: The data analysis approved that the designed tool can be used for measuring exercise self-efficacy among the elderly due to having acceptable reliability and validity, simplicity and a short completion time.
 
Fatemeh Omrani, Naiire Salmani, Somayeh Kahdouei,
Volume 28, Issue 1 (4-2022)
Abstract

Background & Aim: Performing daily activities is a major element of quality of life in heart failure patients. The Duke Activity Status Index (DASI) is a tool to measure factional capacity. We aimed to examine the psychometric properties of the DASI in patients with heart failure.
Methods & Materials: In this methodological study using convenience sampling, we included 120 patients with heart failure referred to the heart clinic of Afshar hospital, Yazd in 2018.  We first translated the original DASI to Farsi using forward and backward translation method. Then, we evaluated its face validity, content validity, criterion-related validity, construct validity (Exploratory Factor Analysis), and reliability (internal consistency).
Results: In quantitative content validity, the content validity index and content validity ratio were confirmed. The criterion-related validity was confirmed using the Spearman correlation coefficient between the New York Heart Association functional classification scores and the DASI score (r=-0.77, P<0.001) with a significant correlation. To assess construct validity, exploratory factor analysis revealed two factors, explaining 52.61% of the total variance. Factor 1 included items with high MET values and factor 2 included those with low MET values. The reliability of the DASI was determined using the Cronbach’s alpha coefficient that was 0.81.
Conclusion: The DASI is of good validity and reliability and due to its appropriate psychometric properties, this tool can be used to evaluate the functional status of patients with heart failure.

 
Arghavan Afra, Noorollah Tahery, Shima Seneysel Bachari, Masoud Torabpour Toroghi,
Volume 30, Issue 3 (9-2024)
Abstract

Background & Aim: Modern professional nursing necessitates the use of information technology to facilitate clinical decision-making and obtain optimal patient care outcomes. The aim of this study was to conduct a psychometric evaluation and adapt the Nursing Informatics Competency Self-Assessment tool for use in Iran.
Methods & Materials: The present research employed a descriptive and methodological design. Initially, the original tool was translated into Persian following a standardized procedure. Subsequent assessments of face and content validity were conducted through expert reviews and the calculation of the content validity index. Reliability was evaluated using both Cronbach's alpha and test-retest methods, including the calculation of the intraclass correlation coefficient. Data analysis was conducted using confirmatory factor analysis on a convenience sample of 300 nursing students from the School of Nursing and Midwifery at Abadan University of Medical Sciences, utilizing SPSS version 22 and LISREL version 8.8.
Results: The content validity index for all items exceeded the standard threshold of 0.79, indicating satisfactory validity scores for each item. The final version of the tool demonstrated acceptable reliability with a Cronbach's alpha coefficient of 0.898 and an intraclass correlation coefficient of 0.893. Confirmatory factor analysis indicated the fitness of a five-factor structure for the Persian version of the tool. Standardized factor loadings showed a good fit and satisfactory construct validity for the tool within the Iranian context.
Conclusion: The Persian version of the Nursing Informatics Competency Self-Assessment Tool exhibits acceptable psychometric properties within the Iranian nursing population and is recommended for use as a credible instrument in nursing practice.

 

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